Mystified about Curling and burnt leaves
Hello, I have quite a number of Hydrangeas in my garden, some in the ground some potted. I suspect they are just "generic" plants, since I found them here when I moved in and Morocco is not known for cultivating special Hydrangeas. My problem is that all my plants have trouble growing : baby leaves seems to curl in on themselves before they even grow out, and then fall off. Larger leaves turn a brown-black around their edges, as if heavily burned. This is a problem I seem to have, year around, irrelevant of the climate. Flower buds start to grow, but never fully, so the overall plants are always alive but barren. I have tried many insecticides, as well as hydrangea-specific fertilizer, but to no avail. Since I love these plants, and would like to see them grow and bloom, all help would be greatly appreciated.
the climate here is Mediterannean, and the commercial products hard to come by, other than generic "insecticide", "fertilizer" etc.
Thanks for your help,